IDM-VNT4208 Field Optical Terminal for Integrated Fiber Services
The IDM-VNT4208 Field Optical Terminal for Integrated Fiber Services is specially designed by Beijing Raytrans Digital Technology Co., Ltd. for military field communications. It features an optical transmission unit and a PCM multiplexing unit, with a shock-resistant chassis and service interfaces tailored for field operations.
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Overview:
The IDM-VNT4208 Field Optical Terminal for Integrated Fiber Services is specifically designed by Beijing Raytrans Digital Technology Co., Ltd. for military field communications. It integrates an optical transmission unit and a PCM multiplexing unit, featuring a shock-resistant chassis and service interfaces optimized for field deployment.
The field optical terminal is developed using advanced international integrated circuits, programmable logic circuits, and high-speed microprocessors. Through various service interface cards, it aggregates voice, low-speed data, and video signals into a standard 2M interface. These signals—2M signals, video signals, transparent E1 signals, and line-rate 100M Ethernet signals—are then multiplexed via time-division multiplexing (TDM) onto a 1.25G optical transmission channel. The plug-and-play design enables simple and quick installation without on-site configuration. Both the optical modules and core circuits use standard components, ensuring high stability. All optical and electrical interfaces comply with international standards, making the device suitable for diverse operational environments.
Product Features:
- Powerful network management function with real-time online monitoring;
- Excellent shock resistance and anti-interference performance, ideal for military field operations;
- 4 shared 100M Ethernet interfaces;
- 4/2 high-definition uncompressed raw video signals, 2 bidirectional high-fidelity audio channels;
- Compatible with PAL, NTSC, and SECAM video standards;
- Rich user interface options, supporting configurable voice and data service cards;
- High expandability: supports voice interface cards such as FXS, FXO, hotline phone cards, magneto telephone cards, EM2/4 cards, etc.; data service cards such as V.24, V.35, etc.;
- Comprehensive alarm functions with panel indicator lights, audible alarms, and alarm mute capability;
- Supports point-to-point operation or can be used in conjunction with centralized card-insertion type equipment to form a star network topology with point-to-multipoint connectivity.
Technical Specifications:
Optical Interface
Interface Type | FC (customizable to SC, etc.) | Fiber Mode | Single-mode (optional multimode) |
Receiver/Transmitter Rate | 1.25Gbps / 1.25G bps | Receiver/Transmitter Wavelength | 1310nm / 1550nm |
Transmitter/Receiver Rate | 1.25G bps / 1.25G bps | Transmitter/Receiver Wavelength | 1550nm / 1310nm |
Transmit Power | -9 ~ -1 dBm | Receiver Sensitivity | Better than -21 dBm |
Transmission Distance | 20 km, optional long-distance optical modules available for extended fiber transmission. | ||
Video
Interface Type | BNC | Luminance Nonlinearity | <3% |
Video Sampling Bit Width | 8 bit | Video Bandwidth | 0 Hz ~ 6.5 MHz |
Differential Phase (DP) | <0.7o | Differential Gain (DG) | <0.7% |
Input Overload Voltage | 1.5VP-P (typical) | Input/Output Voltage | 1VP-P (typical) |
Input/Output Impedance | 75Ω (unbalanced) | Video Signal-to-Noise Ratio | ≥70 dB (weighted) |
E1 Interface
Bit Rate | 2048 Kbps | Coding Type | HDB3 |
Standard Protocol | Supports ITU-T G.703 | Impedance | 75Ω / 120Ω |
Frame Structure | PCM30/31 | Signaling | In-band signaling |
Ethernet
Interface Type | RJ-45 | Transmission Rate | 10M/100M auto-adaptive |
Standard Protocol | Supports IEEE802.3 | Operating Mode | Full/Half-duplex / Auto-adaptive |
FXO/FXS Interface
Audio Range | 300 Hz ~ 3400 Hz | Compression Rate | ITU G.711 A-law |
Impedance | Three-element composite impedance: 200Ω + 560Ω // 0.1μF | Loop Current | 25 mA / channel |
High-Fidelity Audio
Interface Type | RJ45 | Audio Sampling Bit Width | 24 bit |
Input/Output Impedance | ADC: 100KΩ / DAC: 10KΩ | Input/Output Voltage | 1.5VP-P (typical) |
Audio Sampling Frequency | 32 KHz | Audio Signal-to-Noise Ratio | ≥90 dB |
Audio Bandwidth | 20 Hz ~ 20 KHz | Total Harmonic Distortion | <1% |
Data
Interface Type | RJ-45 |
Data Type | RS-232, RS422 (4-wire), RS485 (2-wire) |
Power Supply and Power Consumption
Power Supply Method | AC 220V / DC -48V | Overall Power Consumption | ≤50 W |
Environmental Conditions
Operating Temperature | -15oC ~ +65oC | Storage Temperature | -25oC ~ +75oC |
Industrial Grade | -40oC ~ +85oC | Relative Humidity | 0 ~ 95% (no condensation) |
Product Dimensions
Length × Depth × Height | 440 × 230 × 45 (mm) |
Optical Terminal Model Table
Product Model | Brief Description |
IDM-VNT8208 | 4 bidirectional video channels, 2 bidirectional audio channels |
IDM-VNT4208 | 2 bidirectional video channels, 2 bidirectional audio channels |
Application Example:
